ST. LOUIS, Jan. 12 /PRNewswire-FirstCall/ -- Arch Coal, Inc. (NYSE: ACI)
will discuss its fourth quarter and full year 2008 financial results in a
conference call that will be broadcast live over the Internet on Friday,
January 30 at 11:00 a.m. E.S.T. Participating on the call will be Arch's
Chairman and Chief Executive Officer Steven F. Leer, President and Chief
Operating Officer John W. Eaves, and Senior Vice President and Chief Financial
Officer John T. Drexler.

The webcast will be accessible via the "investor" section of the Arch Coal
Web site at http://investor.archcoal.com. Following the live event, a replay
and podcast download will be available on the site for approximately one
month.

Arch Coal's fourth quarter earnings release will be distributed via PR
Newswire before the market opens on Friday, Jan. 30, and will be posted to the
company's Web site at that time.

St. Louis-based Arch Coal is one of the largest U.S. coal producers, with
revenues of $2.4 billion in 2007. Through its national network of mines, Arch
supplies cleaner-burning, low-sulfur coal to fuel roughly 6 percent of the
nation's electricity. The company also ships coal to domestic and
international steel manufacturers as well as international power producers.